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authorJulia Lawall <julia@diku.dk>2011-01-28 05:43:40 +0000
committerDavid S. Miller <davem@davemloft.net>2011-02-03 20:47:08 -0800
commit38db9e1db1c91c953b2a539130257ce91533c9f6 (patch)
treeb907832971ddcc434ece367da89a0926bdd6cb22 /include/net/genetlink.h
parente2d57766e6744f2956975dd2086d82957187b0f6 (diff)
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include/net/genetlink.h: Allow genlmsg_cancel to accept a NULL argument
nlmsg_cancel can accept NULL as its second argument, so for similarity, this patch extends genlmsg_cancel to be able to accept a NULL second argument as well. Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/genetlink.h')
-rw-r--r--include/net/genetlink.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/genetlink.h b/include/net/genetlink.h
index 8a64b81..b4c7c1c 100644
--- a/include/net/genetlink.h
+++ b/include/net/genetlink.h
@@ -195,7 +195,8 @@ static inline int genlmsg_end(struct sk_buff *skb, void *hdr)
*/
static inline void genlmsg_cancel(struct sk_buff *skb, void *hdr)
{
- nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
+ if (hdr)
+ nlmsg_cancel(skb, hdr - GENL_HDRLEN - NLMSG_HDRLEN);
}
/**
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